/****************************************************************************+
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**+
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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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** This file is part of the examples of the Qt Toolkit.+
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**+
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** $QT_BEGIN_LICENSE:LGPL$+
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** No Commercial Usage+
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** This file contains pre-release code and may not be distributed.+
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** contained in the Technology Preview License Agreement accompanying+
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** this package.+
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** GNU Lesser General Public License Usage+
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** Alternatively, this file may be used under the terms of the GNU Lesser+
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** General Public License version 2.1 as published by the Free Software+
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** Foundation and appearing in the file LICENSE.LGPL included in the+
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** packaging of this file.  Please review the following information to+
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** ensure the GNU Lesser General Public License version 2.1 requirements+
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.+
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** In addition, as a special exception, Nokia gives you certain additional+
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** rights.  These rights are described in the Nokia Qt LGPL Exception+
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.+
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** If you have questions regarding the use of this file, please contact+
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** Nokia at qt-info@nokia.com.+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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#ifndef BOAT_P_H+
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#define BOAT_P_H+
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+
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//+
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//  W A R N I N G+
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//  -------------+
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//+
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// This file is not part of the Qt API.  It exists purely as an+
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// implementation detail.  This header file may change from version to+
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// version without notice, or even be removed.+
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//+
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// We mean it.+
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//+
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+
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//Own+
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#include "bomb.h"+
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#include "graphicsscene.h"+
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+
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// Qt+
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#include <QtGui/QKeyEventTransition>+
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+
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static const int MAX_BOMB = 5;+
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+
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+
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//These transtion test if we have to stop the boat (i.e current speed is 1)+
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class KeyStopTransition : public QKeyEventTransition+
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{+
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public:+
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    KeyStopTransition(Boat *b, QEvent::Type t, int k)+
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    : QKeyEventTransition(b, t, k), boat(b), key(k)+
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    {+
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    }+
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protected:+
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    virtual bool eventTest(QEvent *event)+
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    {+
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        if (!QKeyEventTransition::eventTest(event))+
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            return false;+
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        return (boat->currentSpeed() == 1);+
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    }+
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private:+
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    Boat * boat;+
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    int key;+
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};+
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+
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//These transtion test if we have to move the boat (i.e current speed was 0 or another value)+
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 class KeyMoveTransition : public QKeyEventTransition+
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{+
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public:+
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    KeyMoveTransition(Boat *b, QEvent::Type t, int k)+
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    : QKeyEventTransition(b, t, k), boat(b), key(k)+
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    {+
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    }+
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protected:+
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    virtual bool eventTest(QEvent *event)+
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    {+
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        if (!QKeyEventTransition::eventTest(event))+
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            return false;+
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        return (boat->currentSpeed() >= 0);+
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    }+
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    void onTransition(QEvent *)+
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    {+
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        //We decrease the speed if needed+
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        if (key == Qt::Key_Left && boat->currentDirection() == Boat::Right)+
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            boat->setCurrentSpeed(boat->currentSpeed() - 1);+
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        else if (key == Qt::Key_Right && boat->currentDirection() == Boat::Left)+
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            boat->setCurrentSpeed(boat->currentSpeed() - 1);+
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        else if (boat->currentSpeed() < 3)+
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            boat->setCurrentSpeed(boat->currentSpeed() + 1);+
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        boat->updateBoatMovement();+
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    }+
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private:+
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    Boat * boat;+
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    int key;+
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};+
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+
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//This transition trigger the bombs launch+
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 class KeyLaunchTransition : public QKeyEventTransition+
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{+
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public:+
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    KeyLaunchTransition(Boat *boat, QEvent::Type type, int key)+
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    : QKeyEventTransition(boat, type, key), boat(boat), key(key)+
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    {+
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    }+
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protected:+
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    virtual bool eventTest(QEvent *event)+
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    {+
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        if (!QKeyEventTransition::eventTest(event))+
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            return false;+
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        //We have enough bomb?+
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        return (boat->bombsLaunched() < MAX_BOMB);+
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    }+
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private:+
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    Boat * boat;+
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    int key;+
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};+
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+
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//This state is describing when the boat is moving right+
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class MoveStateRight : public QState+
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{+
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public:+
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    MoveStateRight(Boat *boat,QState *parent = 0) : QState(parent), boat(boat)+
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    {+
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    }+
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protected:+
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    void onEntry(QEvent *)+
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    {+
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        boat->setCurrentDirection(Boat::Right);+
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        boat->updateBoatMovement();+
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    }+
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private:+
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    Boat * boat;+
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};+
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+
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 //This state is describing when the boat is moving left+
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class MoveStateLeft : public QState+
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{+
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public:+
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    MoveStateLeft(Boat *boat,QState *parent = 0) : QState(parent), boat(boat)+
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    {+
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    }+
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protected:+
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    void onEntry(QEvent *)+
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    {+
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        boat->setCurrentDirection(Boat::Left);+
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        boat->updateBoatMovement();+
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    }+
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private:+
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    Boat * boat;+
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};+
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+
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//This state is describing when the boat is in a stand by position+
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class StopState : public QState+
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{+
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public:+
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    StopState(Boat *boat,QState *parent = 0) : QState(parent), boat(boat)+
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    {+
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    }+
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protected:+
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    void onEntry(QEvent *)+
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    {+
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        boat->setCurrentSpeed(0);+
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        boat->setCurrentDirection(Boat::None);+
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        boat->updateBoatMovement();+
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    }+
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private:+
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    Boat * boat;+
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};+
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+
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//This state is describing the launch of the torpedo on the right+
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class LaunchStateRight : public QState+
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{+
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public:+
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    LaunchStateRight(Boat *boat,QState *parent = 0) : QState(parent), boat(boat)+
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    {+
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    }+
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protected:+
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    void onEntry(QEvent *)+
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    {+
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        Bomb *b = new Bomb();+
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        b->setPos(boat->x()+boat->size().width(),boat->y());+
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        GraphicsScene *scene = static_cast<GraphicsScene *>(boat->scene());+
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        scene->addItem(b);+
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        b->launch(Bomb::Right);+
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        boat->setBombsLaunched(boat->bombsLaunched() + 1);+
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    }+
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private:+
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    Boat * boat;+
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};+
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+
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//This state is describing the launch of the torpedo on the left+
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class LaunchStateLeft : public QState+
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{+
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public:+
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    LaunchStateLeft(Boat *boat,QState *parent = 0) : QState(parent), boat(boat)+
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    {+
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    }+
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protected:+
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    void onEntry(QEvent *)+
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    {+
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        Bomb *b = new Bomb();+
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        b->setPos(boat->x() - b->size().width(), boat->y());+
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        GraphicsScene *scene = static_cast<GraphicsScene *>(boat->scene());+
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        scene->addItem(b);+
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        b->launch(Bomb::Left);+
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        boat->setBombsLaunched(boat->bombsLaunched() + 1);+
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    }+
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private:+
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    Boat * boat;+
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};+
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+
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#endif // BOAT_P_H+
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